Systems-based psychiatry: insights from psychedelic research on mechanisms of healing
Frontiers in Psychiatry July 13, 2026 Scott Shannon, Andrew Weil
Psychiatric models that focus on isolated biological dysfunction fail to capture the complexity and context dependence of mental disorders. Drawing on neuroscience, complexity science, and psychedelic research, this paper proposes a systems-based framework where therapeutic change involves a phased process of perturbation, reorganization, and consolidation. Interventions modulate system stability and plasticity, with outcomes shaped by biological, psychological, relational, and environmental factors. Psychedelic-assisted therapies exemplify this by transiently destabilizing entrenched patterns, increasing flexibility, and enabling reorganization under supportive conditions. Recovery is reframed as increased coherence, flexibility, and adaptive capacity rather than mere symptom reduction. This perspective calls for longitudinal, context-sensitive outcome measures and hybrid methodologies.